Battery-plate.



A. S. ATWATER L D. F. SELZER.

BATTERY PLATE.

APPLTCATioN 'FTLED 1mm, 1914.

mg. Patented June 29. 1915.

mums-manuele@- 'spiderman Specioaton ci' Letters Patent Application sledJanuary 2, 1914. serial i.

Zlooll @atom it' may concer-n: vBe it known that ive, ARTHUR S. Arwarnnand DANIEL F. Sensus, citizens of -tbe `[,Tnited States, and residentsof Clercland, in the county of Cuyahoga and State ci Ohio, have inventedcertain new and useful Improvements in Battery-Plates, of which Wehereby declare the following to be a full, clear, and exact description,such as will enable others skilled in the art to which it appertains tomake and use the same.

The objects of the invention are to produce a battery plate in which isprovided the maximum amount of porosity and there- With an increasedamount of surface is obtained for the deposit of active material thereonand also to produce a plate in which no inner core is required tosupport the Walls of the cavities and hence to provide en .extremelylight land eiiicient form of plate in which no blind pockets are formedWhere gas can collect, the gas having a detrimental eiect in itstendency to force the material out of the porous cells formed in theplate.

Furtner objects are to provide a. porous plate through which theelectrolyte will have full circulation and s porous plate of suchconstruction that the greatest possible percentage of the substanceconstituting the body. of the same can be converted into activematerial, and hence will contribute to ,Ward the life of the plate andincrease the amount of 'voltage obtained and efficiency of ythe battery.

The invention also includes a fo m of construction which While notretarding or interfering with the action of the electro- -lyte upon theplate will prevent its scape therefrom, and will not cause the internalresistance or loss of voltage which occurs When deep pockets areemployed to the deepest portions of which the electrolyte finds itditiicult to penetrate.

A further object is to produce a rigid form of plate within which thelead in the walls of the cells is equally distributed and the Walls aresubstantially of equal thickness throughout, thus gaining the maximumamount of surface exposed to the electrolyte, and in which no uselessWeight is employed in material required to support the cells of theplate.

The battery plate having; the improved construction is used ina PlantePatenten senese, reas.;

containing minute closely approximated openings extending therethroughfrom op?"` posits sides, the Walls of which are thi.`

enough to last through the life of the plate and are of substantiallyequal thiclmess and partial caps are raised above the sur# face of theplate and project slightly'over the openings on both sides of the platein reversed positions. These openings are adapted to contain the activematerial and the projecting caps have intervening passages between themto provide paths for the circulation' of the electrolyte, and thecirculation of gases which maybe generated by the action of theelectrolyte.

similar section showing the metal dies or.

molds by means of which the plate is shaped; Fig. 4 is a section takenat right angles to Fig. 3 Ishowing-'the forming dies and intermediatespacers; Fig. 5 is a perspective view of some of the dies and spacers;Fig. 6 is a transverse section of three forming; dies and the spacerswhich separate them. "i

in these views il, are cavities which pass entirely through the body ofthe plate and are separated on one side as shown iu Fig. 2 by parallelinclined partitions 0r Walls B, B of substantially equal thickness, andupon the adjacent sides are separated by means of the parallelpartitions or Walls C, C, which in the use of the plate can be eitherhorizontal or vertical as desired. Caps D, D' are integrally formed withthe lmaterial of thel partitions at the extremities of the inclinedpartitions and extend in opposite directions, and are also raised abovethe plane of the body of the late. The extremities al, al of these capssllghtly overhang the' mouths of the openings A, A and The inventionfurther comprises the come s'iecifically pointed out in the y theover-hanging edge d of the cap at one side of the. opening preferablycoincides with the plane p-p of the overhanging 'edge of the cap d',over the Opposite edge of the opening.

The partitions or walls B and C are made very thin to provide themaximum amount of surface for the action of the electrolyte vduring thelife of the plate, since the plate is used lin a Plante battery. Thethickness of the metal at any point in the plate should be determined bythe desired purpose of the plate, and the desired life thereof. Thethickness shown in the drawings is exaggerated since the thicknessrequired for a life of live years in a Plante plate would not have to beover 40/1000 of an inch. The overhanging caps offer enough protection tothe active material to prevent it from tlaking or stripping out of theopenings, but do not produce pockets of such a character that theelectrolyte cannot find access to both sides thereof, and a ready accessof the electrolyte to all parts of the walls, when the active materialis formed thereon as in the Plant type.

Between the elevated caps are formed parallel passagesE, E running inone direction, and F, F running at right angles thereto through whichthe gases formed by the action of the electrolyte can readily pass andthrough which the electrolyte can cir spacing plates can be perfectlyfiat and perforated or porous.

These battery plates may be either molded `or pressed from a solid plateand the dies lfor obtaining the shape desired are shown iin Figs. 3, 4,5, and 6. Here G, G are thin metal plates having toothed edges g, g, andpreferably employed in ,oppositely'placed pairs. Each tooth is inclinedat f on one side and is vertical at f on the other side and each toothisof the thickness of one of theopenings A. The plates G, G are reversedin position so that the vertical edges cf their teeth lie in a commonplane at'f, f. The inclined partitions are formed between the inclinededges of theteeth, and the overhanging edges al, d of the caps areformed by the vertical sides of the teeth.l The caps themselves areformed between the points and roots of the opposite teeth, and areraised above the body of the plate as shown in Figs. 2, 3, and 4, givingthe appearance of an expanded plate.

Between the toothed plates are shown the spacing plates H and I, whichare preferably about one half as thick as the toothed plates and ofsubstantially the same thickness as the walls C, C of the openings A, A.The plates H and I are not as wide as the toothed plates and their innerAedges form the channels or passa es E, lE in the sur'- faces of thebattery p ate.

Having described the invention what we claim as new and desire to secureby Letters Patent is:

A Plante. battery plate consisting of an outer conducting frame and aninterior swaged portion comprising a plurality of relatively smallparallel substantiallyn Z- shaped partitions vforming ridges Aon thesurfaces of the battery plate, and the portions connecting the top andbottom portions of the Z-shaped partition slanting in oppositedirections in alternate rows, substantially as described.

n testimony whereof, we hereunto set our -l 'hands this 13th day ofSeptember 1913.

ARTHUR'S. ATWATER. DANIEL F. SELZER.

In presence of- CHAs. H. OLDs, WM. M. MONROE.

